12166712604 has 72 divisors (see below), whose sum is σ = 31135104000. Its totient is φ = 4005517824.

The previous prime is 12166712581. The next prime is 12166712629. The reversal of 12166712604 is 40621766121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4096432 + ... + 4099400.

It is an arithmetic number, because the mean of its divisors is an integer number (432432000).

Almost surely, 2^12166712604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12166712604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15567552000).

12166712604 is an abundant number, since it is smaller than the sum of its proper divisors (18968391396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12166712604 is a wasteful number, since it uses less digits than its factorization.

12166712604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 12166712604 in words is "twelve billion, one hundred sixty-six million, seven hundred twelve thousand, six hundred four".